Which is the main reason why Table 1 is not considered tidy data?
| Last_Name | Brazil | China | USA |
| Azevedo | 2 | 0 | 0 |
| Lee | 0 | 4 | 0 |
| Smith | 0 | 0 | 3 |
Which is the main reason why Table 1 is not considered tidy data?
| Last_Name | Brazil | China | USA |
| Azevedo | 2 | 0 | 0 |
| Lee | 0 | 4 | 0 |
| Smith | 0 | 0 | 3 |
